Eeyore now has a dual master cylinder and it only took five months. I got started and then it got cold here in Wyoming. My gurage is not heated, something I have got to change. After trying to put on three rebuilt cylinders, each with a problem I ordered a new one. It was easy to bench bleed and I had plenty of experience installing and hooking up the cylinder. Now the brakes work like they should. The rebuilt cylinders were a waste of time.